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- To determine the origin and facts of all types of documentation, both written and electronically produced
- Comparing an unknown writing sample from an unknown writer and determining whether the two samples belong to the same person
- Crime Laboratory: Microscopes, digital imaging instrumentation, infrared and ultraviolet light sources, video analysis tools and specialized equipment including electrostatic detection devices (EDD) and materials to perform analytical chemistry.

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2000
- Robert Durst killed Susan Berman and Bill Cosby's son, Ennis
- Durst is a letter sent to Berman in 1999 that has handwriting that was similar to an anonymous note sent to Beverly Hills police
- In both samples, the writing is in all capital letters, and Beverly Hills is misspelled as "Beverley Hills."
- Sheila Lowe, president of the American Handwriting Analysis Foundation, noticed other marks like Ls with a little curve at the bottom,  Es in both samples in which the top cross bar is longer than the bottom cross bar, and Ss in which the bottom part bulges larger than the top part
- "For more than 100 years, we have recognized that expert handwriting comparisons have evidentiary value and that juries should 'form their own conclusion in reference to such similarity or resemblance,'" Judges quote of the case

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- Examiner is less exposed to potentially biasing task-irrelevant information
- Nondestructive technique
- Identifying individuals

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-  Can't make a meaningful comparison between uppercase and lowercase
- Drugs, exhaustion, or illness can alter a person's handwriting
- Resistant to change

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Development and Advances Throughout History

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Development and Advances Throughout History

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- Microscopy and photography were basic instrumentation in the early twentieth century.
- Electrostatic Detection Devices/Apparatus (EDD/ESDA): To see indented impressions not visible to the naked eye can
- Video Spectral Comparator (VSC) - Reveal writing that has been added with a different ink or altered and determined by the way different inks respond different wavelength of light

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https://www.forensicscolleges.com/blog/resources/handwriting-analysis-education-guide

https://science.howstuffworks.com/handwriting-analysis2.htm

http://www.forensicsciencesimplified.org/docs/how.html

https://www.nist.gov/sites/default/files/documents/2017/08/23/paulokunii.fhemethodology.tuesdayafternoonsession.pdf

http://scitechconnect.elsevier.com/advances-forensic-document-examination/